Effect of tytanit treatment on vegetative and generative parameters on Rudbeckia hirta cultivars

Ecseri, Károly and Turiné Farkas, Zsuzsa and Kiss, Tímea and Palkovics, András (2026) Effect of tytanit treatment on vegetative and generative parameters on Rudbeckia hirta cultivars. GRADUS, 13 (1). ISSN 2064-8014

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Abstract

Tytanit biostimulant treatment was applied to the Rudbeckia hirta varieties ‘Aranyálom’, ‘Mackó’ and ‘Napfény’ in the 2024 and 2025 vegetation periods, in a microplot experiment, in a raised bed. The vertical spread of the plants fell short of the values given in the variety description. The diameter of the capitulum inflorescences and the final height of the individuals also decreased after the biostimulant treatment compared to the untreated area. There was no significant difference in the number of inflorescences between the varieties studied and the treatments, only the two test years were statistically distinguishable from each other. No differences were observed in the diameter of the inflorescences between the varieties. In both test years, the vitality of the stands was outstanding, and no plant protection treatment was necessary. The applied treatment proved to be neutral for all parameters tested for the three tested taxa.

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